Preparation method for acquiring spherical activated carbon of carbon dioxide

A technology of activated carbon and CO2, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as high cost and high price

Inactive Publication Date: 2012-06-20
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot avoid the use of time-consuming and energy-consuming oxidation infusible, and the raw material is expensive high-softening point asphalt, resulting in high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare 10Kg of novolac resin with a softening point of 70°C, 0.1Kg of nitrogen-containing compound polyoxymethylene, and 3Kg of industrial alcohol as a slurry, and directly add it to a high-pressure solution containing 0.2Kg of surfactant sodium lauryl sulfate and 100Kg of water. Then stir at a constant speed of 500 rpm, start the heating program, raise the temperature to 170 °C at a rate of 10 °C / min, and keep the temperature for 1 hour to obtain phenolic resin balls.

[0025] Put 1kg of resin balls in the integrated carbonization and activation furnace, feed 1000L / min of nitrogen, then raise the temperature to 700°C at a rate of 4°C / min, switch to 100L / min water vapor, switch to nitrogen after activation for 2 hours, And lower the temperature until it drops to 35°C, and take it out to get the final product. The nitrogen content in the product was 2.8 wt%.

[0026] in CO 2 When the content is 100%, the test temperature is 30°C, and the gas pressure is 1atm, the prod...

Embodiment 2

[0028] 10Kg of novolac resin with a softening point of 90°C, 3Kg of nitrogen-containing compound melamine, and 9Kg of denatured alcohol are prepared as a slurry, which is directly added to an autoclave containing 3Kg of surfactant polyvinyl alcohol and 800Kg of water, and then heated at 200 Stir at a constant speed of rpm, start the heating program, raise the temperature to 100°C at a rate of 1°C / min, and keep the temperature constant for 0.5h to obtain phenolic resin balls.

[0029] Put 1kg of resin balls in the integrated carbonization and activation furnace, pass in 300L / min of argon, then raise the temperature to 1000°C at a rate of 4°C / min, switch to 200L / min CO2 gas, switch to argon after activation for 1h , and lower the temperature until it drops to 45°C, and take it out to obtain the final product. The nitrogen content in the product was 3.3 wt%.

[0030] in CO 2 When the content is 100%, the test temperature is 30°C, and the gas pressure is 1atm, the product is CO ...

Embodiment 3

[0032] Prepare 10Kg of novolac resin with a softening point of 120°C, 2Kg of nitrogen-containing compound triethylenetetramine, and 6Kg of denatured alcohol as a slurry, and directly add it to an autoclave containing 5Kg of surfactant polytetrafluoroethylene and 400Kg of water , and then stirred at a constant speed of 1000 rpm, started the heating program, raised the temperature to 100 °C at a rate of 3 °C / min, and kept the temperature for 3 hours to obtain phenolic resin balls.

[0033] Put 1kg of resin balls in the integrated carbonization and activation furnace, pass in 500L / min of argon, then raise the temperature to 800°C at a rate of 0.5°C / min, switch to 100L / min ammonia, switch to argon after activation for 2 hours Air, and lower the temperature until it drops to 50°C, and take it out to get the final product. The nitrogen content in the product was 2.8 wt%.

[0034] in CO 2 When the content is 100%, the test temperature is 30°C, and the gas pressure is 1atm, the prod...

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PUM

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Abstract

Provided is a preparation method for acquiring spherical activated carbon of carbon dioxide. Linetype phenolic resin, nitrogenous compounds and industrial alcohol are mixed to be prepared to pulp, and the pulp is directly added to a reaction kettle which contains a surface active agent and water. After being tightly closed, the reaction kettle is turned on for mixing, heating rate is increased to100 to 170 DEG C, and then the temperature is constant for 0.5 to 3 hours. After natural cooling, resin spheres are obtained. The resin spheres are placed in a carbonization activation furnace, inertgases are led in, proportion by weight of gas flow rate to the resin spheres is 300 to 1,000 L / min: 1kg, then the temperature is increased to 700 to 1,000 DEG C with the heating rate of 0.1 to 4 DEG C / min, the gases are changed to active gases, proportion of the active gases to the resin spheres is 100 to 300L / min: 1kg, after 0.5 to 2 hours of activation, the gases are changed to inert gases, the temperature is lowered to below 50 DEG C, and the final products are obtained. The preparation method for acquiring spherical activated carbon of carbon dioxide has the advantages of being low in cost and high in nitrogen content.

Description

technical field [0001] The invention relates to a preparation method of activated carbon, in particular to a preparation method of phenolic resin-based spherical activated carbon. Background technique [0002] Although the organic amine CO 2 The absorption method is a relatively mature CO 2 Capture and separation technology has long been used in the natural gas and petroleum industries, but due to the high energy consumption, high maintenance costs and high safety concerns caused by the use of highly corrosive amine solvents, the large-scale use of this technology in coal-fired power plants Increase the huge economic operation cost and greatly increase the area occupied by the power plant. Solid adsorbent CO 2 Capture separation technology is considered to be the most promising technology that can replace the organic amine absorption method. [0003] Due to its regular spherical appearance, spherical activated carbon endows it with strong wear resistance, high bulk densi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 李开喜
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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